With probability ?
1) a small train at an amusement park is carrying passengers. half of the...
Mathematics, 31.01.2020 13:50 manman71
With probability ?
1) a small train at an amusement park is carrying passengers. half of the passengers are 6 years old, 1/10 are 7 years old, 1/5 are 8 years old and 1/5 are 9 years old. what is the expected age for one of the passengers on the train?
a) 6 years
b)7.1 years
c)8 years
d) 8.5 years
2)which probability distribution table corresponds with this frequency table?
x 1 2 3 4 5
f 3 7 2 3 5
a) x 1 2 3 4 5
p 0.3 0.7 0.2 0.3 0.5
b) x 1 2 3 4 5
p 0.2 0.2 0.2 0.2 0.2
c x 1 2 3 4 5
p 0.15 0.35 0.1 0.15 0.25
d) x 1 2 3 4 5
p 1.5 3.5 1 1.5 2.5
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